Multithread covariance estimation.
1. Multithread the inversion of J'J.
2. Simplify the dense rank truncation loop.
3. Minor correction to building documentation.
Change-Id: Ide932811c0f28dc6c253809339fb2caa083865b5
diff --git a/docs/source/building.rst b/docs/source/building.rst
index 17e17d4..b91027b 100644
--- a/docs/source/building.rst
+++ b/docs/source/building.rst
@@ -72,7 +72,7 @@
.. code-block:: bash
# CMake
- sudo apt-hey install cmake
+ sudo apt-get install cmake
# gflags
tar -xvzf gflags-2.0.tar.gz
cd gflags-2.0